The #1 alternative song on May 18, 2009

Know Your Enemy By Green Day

Other #1 songs on May 18, 2009

#1 Hit Song

Boom Boom Pow
The Black Eyed Peas

UK #1 Song

Boom Boom Pow
The Black Eyed Peas

#1 R&B Song

Blame It
Jamie Foxx featuring T-Pain

#1 Country Song

It Happens
Sugarland

#1 Dance Track

Halo
Beyoncé

Notable May 18 birthdays in the 2000s

Travis Hunter

Born May 18, 2003
Emma Navarro

Born May 18, 2001